https://voicesofdemocracy.umd.edu/wp-content/uploads/2011/01/tr-with-crowd-conservation.jpg147150admin/wp-content/uploads/2014/07/vod-logo.pngadmin2011-01-07 16:04:552016-03-12 02:50:34Theodore Roosevelt, "Conservation as a National Duty" (13 May 1908)